View full sizeMonkeynaut, a popular IPA from Huntsville's Straight to Ale. (Stan Diel/sdiel@al.com)

The breweries will be in downtown Huntsville on Saturday to discuss the stories behind some of their space-themed craft brews. The 11 a.m. to 4 p.m. gathering at VIBE will be held during the inaugural "NASA on the Square" celebration.